JACKSON - of Marshfield, March 31, Dr. Constance E., (Cordice) beloved wife of 50 years of Eugene Jackson. Also survived by a cousin Janet S. Williams of Duxbury and several other cousins. A Funeral service will be held at the MacDonald Funeral Home, 1755 Ocean St., Rte. 139, Marshfield, on Wednesday at 11:00 a.m. Visiting hours Tuesday, 5:00 to 7:00 p.m. Interment will be in the Mass. National Cemetery, Bourne. Contributions in Constance's memory may be made to. Trinity Episcopal Church, 229 Highland St., Marshfield Hills, MA 02051 or the BU School of Education.